“Wigwam” first appeared on Bob Dylan’s 1970 album Self Portrait. An earlier version of the song, without its brass accompaniment will become available on April 20. This release is set for Record Store Day 2013 when Dylan will offer a a 7” vinyl single demo of the tune. The B-side will feature a previously unreleased version of “Thirsty Boots” from the forthcoming Bootleg Series Vol. 10.